A Low-Noise Output Capacitorless Low-Dropout Regulator With a Switched-RC Bandgap Reference

Low-noise linear regulators are critical for power supply regulation of noise-sensitive circuits, such as ADCs, phaselocked loops, and other mixed-signal/RF system-on-a-chip designs. A low-noise low-dropout (LN-LDO) regulator using switched-RC bandgap reference and a multiloop, unconditionally stable error amplifier for output capacitorless operation is presented in this paper. A sample-and-hold s...